Professional-Quality 29-Piece COBALT Drill Bit Set
- High-carbon steel core for superior ductile strength without brittleness
- Incredibly-hard Cobalt-coated - hardest material available on a twist bit
- Cuts even hardened steels like spring and stainless steel--even Titanium!
- Full range of bit sizes in one compact kit; 1/16" to 1/2" by 1/64ths
- Heavy-duty steel index case keeps bits organized, easy to identify
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